Edwin Grant Conklin

Conklin’s 1891 doctoral work followed cell lineages in the gastropod Crepidula, including the origin of mesoderm. Tracking dividing cells and their descendants treated development as a continuous sequence rather than a comparison of whole embryos at separate stages.

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At Woods Hole, Conklin compared his results with Edmund Beecher Wilson’s work on Nereis and identified correspondences in cleavage patterns. Later ascidian studies examined relationships between regions of the egg and subsequent tissues, informing debates about cell fate and the organization of development.

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Conklin joined Princeton in 1908 and served scientific publications including Biological Bulletin and Journal of Morphology. He lectured publicly on evolution, heredity and environment. He also participated in American eugenics organizations, an additional aspect of the history of his scientific and public career.

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